摘要
研究十二烷基苯磺酸根(DBS ̄-)掺杂的聚吡咯(PPY)膜(PPY(DBS ̄-))的循环伏安行为和现场拉曼光谱发现,作为对阴离子的DBS ̄-可分为两类,一类DBS ̄-类似于小阴离子,即随PPY的氧化还原在膜中自由地嵌脱;另一类DBS ̄-则始终滞留于PPY(DBS ̄-)膜内,因此当PPY还原时,膜内多余的负电荷则由溶液中的Na ̄+和H ̄+嵌入膜中来补偿。另外,嵌入膜中的H ̄+使PPY发生了一定程度的质子化。
Polvpyrrole(PPY ) films doped with large organic anion dodecylben-zenesulfonate(DBS ̄-)have been studied in detail by cyclic voltammetry and in-situ Raman spec-troscopy. The results reveal that there exist two kinds of DBS ̄- doped in the films:(i)DBS ̄- candope and undope freely in PPY films during the redox process of PPY, which is similar to thedoping process of small anion;(ii) DBS ̄- are always remained inside PPY films.Therefore,forthe reduced PPY films,the negative charges in the films have to be compensated by the incorpo-ration of cations such as Na ̄+ or H ̄+ from the solution. In addition,H ̄+ incorporated.can induce acertain degree of protonation of PPY.
出处
《厦门大学学报(自然科学版)》
CAS
CSCD
北大核心
1995年第2期226-233,共8页
Journal of Xiamen University:Natural Science
基金
国家自然科学基金和厦门大学固体表面物理化学国家重点实验室资助项目
关键词
聚吡咯
苯磺酸钠
拉曼光谱
电化学
掺杂
polypyrrole,Sodium dodecylbenzenesulfonate,Electrochemistry,In-situRaman spectroscopy